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---
id: 60b69a66b6ddb80858c5158c
title: Step 22
challengeType: 0
dashedName: step-22
---
# --description--
Usando un selettore `id` , crea una regola per l'elemento `black-mask` . Dagli una proprietà `width` del `100%` , una proprietà `height` di `50px` e un `background-color` con il valore `rgb(45, 31, 19)` .
# --hints--
Dovresti avere un selettore `#black-mask` .
```js
assert(new __helpers.CSSHelp(document).getStyle('#black-mask'));
```
Il selettore `#black-mask` dovrebbe avere una proprietà `width` impostata sul `100%` .
```js
assert(new __helpers.CSSHelp(document).getStyle('#black-mask')?.width === '100%');
```
Il selettore `#black-mask` dovrebbe avere una proprietà `height` impostata a `50px` .
```js
assert(new __helpers.CSSHelp(document).getStyle('#black-mask')?.height === '50px');
```
Il selettore `#black-mask` dovrebbe avere una proprietà `background-color` con il valore `rgb(45, 31, 19)` .
```js
assert(new __helpers.CSSHelp(document).getStyle('#black-mask')?.backgroundColor === 'rgb(45, 31, 19)');
```
# --seed--
## --seed-contents--
```html
<!DOCTYPE html>
< html >
< head >
< meta charset = "utf-8" >
< title > Picasso Painting< / title >
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< link rel = "stylesheet" href = "./styles.css" / >
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< link rel = "stylesheet" href = "https://use.fontawesome.com/releases/v5.8.2/css/all.css" >
< / head >
< body >
< div id = "back-wall" > < / div >
< div class = "characters" >
< div id = "offwhite-character" >
< div id = "white-hat" > < / div >
< div id = "black-mask" >
< div class = "eyes left" > < / div >
< div class = "eyes right" > < / div >
< / div >
< div id = "gray-instrument" >
< div class = "black-dot" > < / div >
< div class = "black-dot" > < / div >
< div class = "black-dot" > < / div >
< div class = "black-dot" > < / div >
< div class = "black-dot" > < / div >
< / div >
< div id = "tan-table" > < / div >
< / div >
< / div >
< / body >
< / html >
```
```css
body {
background-color: rgb(184, 132, 46);
}
#back-wall {
background-color: #8B4513 ;
width: 100%;
height: 60%;
position: absolute;
top: 0;
left: 0;
z-index: -1;
}
#offwhite-character {
width: 300px;
height: 550px;
background-color: GhostWhite;
position: absolute;
top: 20%;
left: 17.5%;
}
#white-hat {
width: 0;
height: 0;
border-style: solid;
border-width: 0 120px 140px 180px;
border-top-color: transparent;
border-right-color: transparent;
border-bottom-color: GhostWhite;
border-left-color: transparent;
position: absolute;
top: -140px;
left: 0;
}
--fcc-editable-region--
--fcc-editable-region--
```